531 Strength
com.jachobsen.fivethreeone
View detailed information for 531 Strength — ratings, download counts, screenshots, pricing and developer details. See integrated SDKs and related technical data.
Total installs
1,000,000+
Rating
4.9(11,331 reviews)
Released
December 14, 2015
Last updated
January 11, 2026
Category
Health & Fitness
Developer
Henrik Jachobsen
Developer details
Name
Henrik Jachobsen
E-mail
unknown
Website
https://531.jachobsen.io
Country
unknown
Address
unknown
Screenshots
Description
Makes it quick and easy to get a full overview of all weights, reps and sets based off your 1RM when you’re following the 5/3/1 program.
- Save your current 1 RM for each of the four exercises
- View calculated weights for each step in the cycle
- Round the weight to match the plates you have available
This app is made for people who are familiar with the structure of the 5/3/1 program and who needs simple access to the calculated weights for each exercise.